Allegany County has seven municipalities: Barton, Cumberland, Frostburg, Lonaconing, Luke, Midland, and Westernport. Its county seat, Cumberland, is the oldest city, incorporated in 1815. Later, Frostburg formed its own government in 1839, Westernport in 1858, Lonaconing in 1890, Barton in 1900, Midland in 1900, and Luke in 1922.